帮我润色以下段落使其符合科研论文的逻辑：4在一个容量为25 ml的烧杯中分别加入02 g、04 g、06 g的乙基纤维素样品并加入10 ml乙醇溶液。在40℃的水浴中加热搅拌直至完全溶解。此时得到了三种不同浓度分别为002 gml、004 gml、006 gml的乙基纤维素溶液。随后将这些溶液均匀地倒在玻璃板上并使用1000 μm的刮膜刀从上至下刮平。将样品风干半小时即可得到三组乙基纤维素-乙酸甲

In this experiment, three different amounts of ethyl cellulose samples (0.2 g, 0.4 g, and 0.6 g) were added to a 25 ml beaker along with 10 ml of ethanol solution. The mixture was heated and stirred in a 40℃ water bath until completely dissolved, resulting in three different concentrations (0.02 g/ml, 0.04 g/ml, and 0.06 g/ml) of ethyl cellulose solution. The solutions were then evenly poured onto a glass plate and scraped flat using a 1000 μm scraper. After air-drying for half an hour, three groups of ethyl cellulose-acetone methyl ester films were obtained. Fourier-transform infrared spectrometry was used to speculate the film-forming mechanism of ECA films based on experimental phenomena and relevant literature.

Furthermore, a certain amount of each group of film samples was buried in soil with a depth of 3 cm - 5 cm, and three parallel experiments were conducted. The samples were taken out at regular intervals, washed, and dried to measure the film's weight, which was used to preliminarily determine whether the film could be biodegraded. In addition, the infrared spectra were used to identify whether any new substances were produced during the degradation process. Moreover, scanning electron microscopy was used to observe the microstructure of the film surface and to understand the degradation of the film.